Dali Kingdom

Nanzhao was overthrown in 902 and three dynasties followed in quick succession before Duan Siping seized power in 937, establishing himself at Dali.[3] The Duan clan professed to have Han ancestry.[4] Yuan dynasty records said the Duan family came from Wuwei in Gansu:

Yuan records claim that the Dali kingdom’s Duan rulers originally came from Wuwei Commandery in modern-day Gansu Province, but this is not confirmed by Song or Dali sources. A significant change from Nanzhao is apparent in Dali rulers’ naming practices, which generally do not follow the patronymic linkage system. This suggests that the Dali elites presented themselves as more “Chinese” than their Nanzhao counterparts.[5]

— Megan Bryson

Dali's relationship with the Song was cordial throughout its entire existence. Dali congratulated the Song dynasty on the conquest of Later Shu in 965 and voluntarily established tribute relations in 982. It was however essentially an independent state. At times the Song even declined offers of tribute.[3] The Song founder Song Taizu declared all land south of the Dadu River to be Dali territory and did not desire to pursue any further claims to avoid the Tang dynasty's disastrous efforts against Nanzhao.[6]

Dali relations with the Song differed markedly from Nanzhao-Tang relations. When the first Song emperor, Taizu, came to power, he declared that, in light of Tang difficulties in the Southwest, he would forfeit the Yue and Sui Commanderies and use the Dadu River as the border with Dali. His successors followed this policy, so contact between the Song and Dali was minimal. Song records show reluctance to engage with Dali directly in any way, even through the standard tributary relationship of vassal (Dali) and lord (Song). Because of Song officials’ wariness, Dali was only allowed to offer tribute at the Song court on three occasions. Their requests to offer tribute were repeatedly rejected on the grounds that they would cause trouble for Song, as Nanzhao had for Tang.[7]

— Megan Bryson

Dali's primary importance to the Song dynasty was its horses, which were highly prized and sought after as military assets, especially after the fall of the Northern Song. They were described by a Song official in the following passage:

These horses possess a shape [that is] quite magnificent. They stand low with a muscular front, very similar to the shape of a chicken. The diaphragm is broad, shoulders thick, waist flat, and back round. They are trained to squat on their rear ends like a dog. They easily climb steep terrain on command and possess both speed and agility in chase. They have been raised on bitter buckwheat, so they require little to maintain. How could a horse like this not be considered a good horse?[8]

In 1094, the former prime minister Gao Shengtai forced King Duan Zhengming to relinquish the throne to him and renamed the Dali Kingdom to "Dazhong Kingdom". Gao Shengtai ruled briefly until his death in 1096, after which the throne was returned to the Duan family. Duan Zhengming's younger brother, Duan Zhengchun, became the new ruler and restored the kingdom's former name.[7]

The Gao of Beisheng claimed descent from Gao Shengtai 高昇泰, who usurped the throne of the Dali kingdom c.1094 for approximately one year. According to the Yuan History, Gao Zhisheng 高智升 sent his grandson, Gao Dahui 高大惠, to administer the area after the fall of the Nanzhao kingdom. The Gao served as the Native Officials of Beisheng sub-prefecture for eleven generations during the Ming dynasty. The Ming appointed the first Gao Ce 高策 in recognition of his meritorious military service in 1389, and the eleventh Gao Shichang 高世昌 inherited the position of Vice Magistrate of rank four in 1630.[9]

— Huang Caiwen

According to a Vietnamese stone inscription, in 1096 a Dali magician was said to have plotted a conspiracy to murder King Lý Nhân Tông. After the death of Nhân Tông in 1127, his adopted son (by concubine) named Zhizhi had escaped to Dali, changed his surname to Zhao, and assumed the title pingwang (peaceful king). When he learned that his older brother, King Lý Thần Tông, had died in 1137, Zhizhi returned to Đại Việt and attacked Lý Anh Tông with 3,000 Dali troops. However, he was defeated and executed.[10]

In 1252 Möngke Khan placed his brother Kublai in charge of invading Dali. In 1253 Kublai's army crossed the Jinsha River and received the surrender of Duan Xingzhi, who presented to Möngke in 1256 maps of Yunnan. Duan Xingzhi of Dali was enfeoffed as Maharaja (摩诃罗嵯),[11] and the Duan imperial family continued to hold the title of Maharaja in Yunnan as vassals to the Mongols under the supervision of Borjigin imperial princes and Muslim governors. The Duan family reigned in Dali while the governors served in Kunming. After the Ming conquest of Yunnan,[12] the members of the Duan clan were scattered in various distant areas of China by the Hongwu Emperor.[13]

The Duan family governed Yunnan's various indigenous peoples for eleven generations until the end of Mongol rule. They willingly contributed soldiers to the Mongol campaign against the Song dynasty. In 1271, they aided the Yuan dynasty in putting down a Mongol rebellion in Yunnan.[13]

In 1274, Ajall Shams al-Din Omar was assigned by Kublai to stabilize Yunnan. He instituted a native chieftain system that came to be known as tusi which assigned ranks and posts to native chieftains. Under this institution of "rule based on native customs" the locals retained much of their autonomy with the exception of three obligations. One, they would provide surrendered troops to the Yuan government. Two, local chieftains would provide tribute to the Yuan court. Three, they would follow the rules of appointment, succession, promotion, degradation, reward, and punishment of native chieftains created by the Yuan court.[13]

Yuan rule also introduced a significant Muslim influence into Yunnan.[13]

The King of Dali Duan Gong was married to the Mongol Borjigin princess Agai, daughter of the Yuan dynasty Prince of Liang, Basalawarmi. They had a son and a daughter, Duan Sengnu.[14][15][16][17][18][19][20][21][22][23] their children were also called Duan Qiangna and Duan Bao.[24] However the Mongols feared the power of Duan Gong and killed him. Duan Sengnu raised Duan Bao to take revenge against Basalawarmi for the killing of Duan Gong.[25][26] A play was made based on these events.[27][28] According to Yuan documents, the Duan family were originally ethnic Han from Wuwei commandery, Gansu.[5][29][30] Other Duan families also originated from Wuwei.[31][32]

In 1381, the Ming dynasty dispatched 300,000 troops to crush the Yuan remnants in Yunnan.

The Duan clan, who helped the Yuan dynasty against a Red Turban Rebellion attack from Sichuan, also fought against the Ming army. Duan Gong refused to surrender by writing to Fu Youde, making it clear that Dali could only be a tributary to the Ming. Fu Youde attacked and crushed Duan Gong's realm after a fierce battle. The Duan brothers were taken captive and escorted back to the Ming capital.[33]